Gummed tear strip



July.9,= 1935. I c, v, WALTERS 2,007,625

\ GUMMED TEAR STRIP Filed June 18; 1934 Inventor Gar/02L KWaZfi 7's Patented July 9, 1935 UNITED STATES PATENT OFFICE GUMMED TEAR STRIP Carroll V. Walters, Kansas City, Mo., assignor of one-fourth to Claude A. Carlet and. onefourth to Louis Orlando, Sr., both of Kansas City, Mo.

Application June 18, 1934, Serial 'No. 731,052

1 Claim.

rips the container and my object is to produce anopener for envelopes or other containers ofpaper or easily rupturable material, which operates dependablyand efficiently, can be applied in the course of manufacture of the envelope or the like, without appreciably retarding the speed of production or appreciably increasing the cost of the latter, and which is of simple and cheap construction.

With the object mentioned in view, the invention consists in certain novel and useful featuresof construction and organization of parts as hereinafter described and claimed; and in order that it may be fully understood, reference is to be had to the accompanying drawing, in which:

Figure 1 is an inner. face view of an envelope blankas same appears equipped with a threadequipped ripping tape before the bottom and end flaps are folded over and secured together asindicated by dotted lines.

Figure 2 is an inner face view of the envelope as it appears afterits top flap has been closed and the envelope has been ripped open along the bottom and end margins by .the thread and then unfolded, the envelope in this condition exposing any printed mattershould such have been applied upon its inner face prior to the folding of the bottom and end flaps.

Figure 3 is an enlarged fragmentary-perspective view of the tape. Figure 4 is a similar view of a modified form of the tape.

Figure 5 is a view showing the tape slitted near one end and notched near the other end, as alternate modes for facilitating bending of a stout tape for use particularly with a cardboard container.

Figure 6 is a modified form of tape composed of a series of tape sections having a thread common to all the sections.

Referring now to the drawing, I indicates an envelope, shown as of conventional type, but which may be of other than rectangular contour, or it may be in the form of a box, such as those for holding breakfast foods, or other products,-

' thread or the like is placed on the gummed face for .adherence thereto, extending longitudinally ofthe tape and preferably nearer one margin thereof, than the other.

lope.

The thread-equipped tape is shown in two forms, Figures 3 and 4. In Figure 3, the tape is in two sections, the opposite edges of the sections being fastened together at opposite sides of the thread by the gummed surface; it being noted that part of the gummed surface is left exposed because one section of the tape is narrower than the other. In the other form, the thread is caused to adhere-to the gummed surface of the tape, but is left with one side ex- 10 posed.

The thread equipped tape, at properly disposed intervals, may be transversely slit at 5, from its exposed gummed edge to the thread, to facilitate bending at the bottom corners of an envelopeor the like, or may be notched as at6 for the same purpose, though where the tape is of thin mate- 'rial, its folding to effect changes of directionto accommodate particular containers, may be resorted to without slitting or notching it.

In the course of manufacture of envelopes, and while they are in the condition indicated by full lines, Figure 1, the thread-equipped tape is applied, that portion of the gummed surface exposed in Figures 3 to 5 and 6, being caused to adhere to the envelope in close proximity to and parallel with the lines of junction of the front side with the back and end sections, so that when the sections mentioned are folded over and secured. together to complete the envelope ready for boxing and delivery to purchasers, the threadequipped tape will be wholly within the envelope, and when the latter is sealed, will be inaccessible except by tearing off a top corner of the enveenvelope may be suitably marked or weakened as common, to call attention to the point most convenient for effecting opening of the envelope. Tearing at such point followed by a pull on the thread, will insure that advertising matter printed on the inner surface of the envelope, will be brought to the openers attention.

Figure 2 indicates an envelope opened to expose its inner faces, after. it has been ripped at If desired, one of the top comers of the the bottom and ends by the rip thread, the withdrawal of the latter leaving the ripped tape exposed where attached to the envelope.

a series of spaced sections, having a thread in common. With this type, the bends at the lower corners of an envelope, can occur-in the thread alone, but in such case, at the points where each bend is to be made, it is desirable to have the adjacent sections of the tape .close together to insure that the interposed bent portion of the In Figure 6, the tape is shown as composed of thread shall lie snugly within the comer of the envelope.

From the above description and the draw it will be apparent that I have produced a thread-equipped tape possessing the advantages set forth as desirable, and it is to be understood that I claim all modifications thereof within the spirit and scope oi the appended claim.

I claim:

A container ripping tape, comprising a strip oi! flexible rupturable material having one gummed face, a rip thread extending longitudinally of container. v

CARROLL V. WALTERS. 

